Inuyashiki Vol 2 Manga English

Inuyashiki (?????) is a Japanese science fiction manga series written and illustrated by Hiroya Oku.

Inuyashiki Ichiro is an older, friendless man with an uncaring family. One fateful evening in a nearly empty public park, he is struck by an explosion of extraterrestrial origin, and his body is replaced by an incredibly powerful, but still outwardly human, mechanical body. He quickly realizes the extent of his body's powers, and after saving a homeless man being beaten by a pack of teenagers, he decides to dedicate himself to doing good, using his powers to heal those with incurable diseases and fight crime.
However, a teenager who was with him at the time of the explosion, Shishigami Hiro, had the same fate as Ichiro, but unlike Inuyashiki, Shishigami becomes a psychopath who goes about using his newfound abilities to murder various people, from classmates that annoy him to innocent families, including young children, just for amusement. His acts of merciless cruelty bring him the attention of the police, who can do nothing to stop him. Hiro becomes the most wanted criminal in the country. The series follows these two different people who once shared the same bizarre experience, as their paths are destined to clash.